{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T03:07:18Z","timestamp":1793070438053,"version":"4.5.0"},"reference-count":37,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2011,10,19]],"date-time":"2011-10-19T00:00:00Z","timestamp":1318982400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Am J Sports Med"],"published-print":{"date-parts":[[2012,1]]},"abstract":"<jats:p>Background: Over the long term, acute patellar dislocations can result in patellar instability, with high recurrence rates after nonoperative treatment.<\/jats:p>\n                  <jats:p>Purpose: To compare the results of operative (reconstruction of the medial patellofemoral ligament [MPFL]) versus nonoperative treatment of primary patellar dislocation.<\/jats:p>\n                  <jats:p>Study Design: Randomized controlled trial; Level of evidence, 1.<\/jats:p>\n                  <jats:p>\n                    Methods: Thirty-nine patients (41 knees) (mean age, 24.2 years; range, 12-38 years) with acute patellar dislocation were randomized into 2 groups. One group was treated nonoperatively with immobilization and physiotherapy, the other was treated surgically with MPFL reconstruction; both groups were evaluated with minimum follow-up of 2 years. The Kujala questionnaire was applied to assess pain and quality of life, and recurrence was evaluated. Pearson \u03c7\n                    <jats:sup>2<\/jats:sup>\n                    or Fisher exact test was used in the statistical evaluation.\n                  <\/jats:p>\n                  <jats:p>Results: The statistical analysis showed that the mean Kujala score was significantly lower in the nonoperative group (70.8), when compared with the mean value of the surgical group (88.9; P = .001). The surgical group presented a higher percentage of \u201cgood\/excellent\u201d results (71.43%) on the Kujala score when compared with the nonoperative group (25.0%; P = .003). The nonoperative group presented a large number of recurrences and subluxations (7 patients; 35% of cases), whereas there were no reports of recurrences or subluxations in the surgical group.<\/jats:p>\n                  <jats:p>Conclusion: Treatment with MPFL reconstruction using the patellar tendon produced better results, based on the analyses of posttreatment recurrences and the better final results of the Kujala questionnaire after a minimum follow-up period of 2 years.<\/jats:p>","DOI":"10.1177\/0363546511423742","type":"journal-article","created":{"date-parts":[[2011,10,20]],"date-time":"2011-10-20T00:57:21Z","timestamp":1319072241000},"page":"114-122","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":222,"title":["Traumatic Patellar Dislocation"],"prefix":"10.1177","volume":"40","author":[{"given":"Alexandre Carneiro","family":"Bitar","sequence":"first","affiliation":[{"name":"Instituto Vita, S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marco Kawamura","family":"Demange","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, IOT-HCFMUSP, S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Caio Oliveira","family":"D\u2019Elia","sequence":"additional","affiliation":[{"name":"Instituto Vita, S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gilberto Luis","family":"Camanho","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, IOT-HCFMUSP, S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2011,10,19]]},"reference":[{"key":"bibr1-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-199411000-00003"},{"key":"bibr2-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1177\/03635465000280060701"},{"key":"bibr3-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1016\/S0968-0160(03)00006-1"},{"key":"bibr4-0363546511423742","doi-asserted-by":"publisher","DOI":"10.5435\/00124635-199701000-00006"},{"key":"bibr5-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1097\/01.jsm.0000157315.10756.14"},{"key":"bibr6-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2006.07.008"},{"key":"bibr7-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2008.12.005"},{"key":"bibr8-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1177\/036354658801600308"},{"key":"bibr9-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2008.03.012"},{"key":"bibr10-0363546511423742","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199305000-00007"},{"key":"bibr11-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1007\/BF01552649"},{"key":"bibr12-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1177\/03635465980260012701"},{"key":"bibr13-0363546511423742","doi-asserted-by":"publisher","DOI":"10.3928\/01477447-20080401-07"},{"key":"bibr14-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.2253011578"},{"key":"bibr15-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1007\/BF01560202"},{"key":"bibr16-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2004.03.002"},{"key":"bibr17-0363546511423742","doi-asserted-by":"crossref","first-page":"159","DOI":"10.1097\/00003086-199208000-00026","volume":"281","author":"Grelsamer RP","year":"1992","journal-title":"Clin Orthop Relat Res"},{"key":"bibr18-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1007\/BF01565461"},{"key":"bibr19-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-199804000-00021"},{"key":"bibr20-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1177\/036354658601400204"},{"key":"bibr21-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1097\/00005373-198502000-00014"},{"key":"bibr22-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1016\/S0749-8063(05)80366-4"},{"key":"bibr23-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1177\/036354659702500213"},{"key":"bibr24-0363546511423742","first-page":"88","volume":"139","author":"McManus F","year":"1979","journal-title":"Clin Orthop Relat Res"},{"key":"bibr25-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1097\/JSA.0b013e318042b695"},{"key":"bibr26-0363546511423742","volume-title":"Applied Linear Statistical Models","author":"Neter J","year":"1996","edition":"4"},{"key":"bibr27-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1080\/17453670510041790"},{"key":"bibr28-0363546511423742","doi-asserted-by":"publisher","DOI":"10.3109\/17453679708996254"},{"key":"bibr29-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1007\/s002640050366"},{"key":"bibr30-0363546511423742","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.G.00072"},{"key":"bibr31-0363546511423742","volume-title":"Fundamentals of Biostatistics","author":"Rosner B","year":"2000","edition":"5"},{"key":"bibr32-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1177\/036354659602400110"},{"key":"bibr33-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1177\/03635465000280031001"},{"key":"bibr34-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1016\/S0749-8063(87)80057-9"},{"key":"bibr35-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1177\/0363546508322894"},{"key":"bibr36-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1097\/BLO.0b013e31802eb40a"},{"key":"bibr37-0363546511423742","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-001-0261-z"}],"container-title":["The American Journal of Sports Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0363546511423742","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/0363546511423742","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0363546511423742","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T09:41:41Z","timestamp":1777369301000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/0363546511423742"}},"subtitle":["Nonoperative Treatment Compared With MPFL Reconstruction Using Patellar Tendon"],"short-title":[],"issued":{"date-parts":[[2011,10,19]]},"references-count":37,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2012,1]]}},"alternative-id":["10.1177\/0363546511423742"],"URL":"https:\/\/doi.org\/10.1177\/0363546511423742","relation":{},"ISSN":["0363-5465","1552-3365"],"issn-type":[{"value":"0363-5465","type":"print"},{"value":"1552-3365","type":"electronic"}],"subject":[],"published":{"date-parts":[[2011,10,19]]}}}